Capitol Story Image: 

The Capitol actually has two domes. The outer dome was scaled to the size of the exterior of the building, whereas the smaller interior dome is sized to the rotunda’s proportions. Thirty-six iron trusses support both domes.

The Capitol Story
The Capitol Dome
Image Caption

Inner Dome

The Capitol actually has two domes. The outer dome was scaled to the size of the exterior of the building, whereas the smaller interior dome is sized to the rotunda’s proportions. Thirty-six iron trusses support both domes.

Image 1 of 1
The Capitol Story
The Capitol Dome